species                   description                                   
Ditylum_brightwellii      Internal_transcribed_spacer_1;_popset_number  
Thalassiosira_rotula      Internal_transcribed_spacer_region_I          
Thalassiosira_rotula      Partial_28S_rDNA                              
Thalassiosira_rotula      18S_rDNA                                      
Thalassiosira_gravida     Internal_transcribed_spacer_region_I          
Thalassiosira_gravida     Partial_28S_rDNA                              
Thalassiosira_gravida     18S_rDNA